package com.test3;

import java.util.function.Function;

public class Test11<E> {

    private E t;

    public Test11(E t){
        this.t = t;
    }

    public <R> Test11<E> build(Function<? super E,R> maper){
        System.err.println(maper.apply(t));
        return this;
    }

    public static void main(String[] args) {

        String a = "\\";
        System.err.println(a);
    }

}
